Condenser and open loop two phase cooling system
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Solution Overview
Problem
Conventional condensers used in immersion cooling systems for data centers are large in size, making them difficult to install in finite spaces and resulting in insufficient heat dissipation efficiency due to the need for fans to cool gaseous working fluids.
Innovation Solution
A condenser design with a casing and pipes, where the first inlet is closer to the second outlet and the first outlet is closer to the second inlet, allowing coolant and working fluid to flow in opposite directions, increasing temperature difference and heat exchange efficiency, and the diameter of the first inlet is greater than the first outlet to enhance heat dissipation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a fan is used to cool the gaseous working fluid in the condenser, then the heat dissipation function is achieved, but the condenser size becomes large and difficult to install in finite space
Solution Approach 1:
The patent removes the fan component from the condenser system entirely, extracting the active cooling mechanism and replacing it with a passive heat dissipation design. The condenser relies on natural convection and the phase change of the working fluid rather than mechanical forcing, thereby eliminating the need for a fan while reducing overall condenser size.
Solution Approach 2:
The condenser is designed to perform heat dissipation through self-service mechanisms: the working fluid undergoes phase change from gas to liquid within the condenser, releasing latent heat that is dissipated passively through the condenser walls. This self-driven phase change and heat transfer process eliminates the need for external active cooling components.
2Volume of moving object
If the condenser size is reduced for installation in finite space, then the installation feasibility is improved, but the heat dissipation efficiency becomes insufficient
Solution Approach 1:
The patent utilizes phase transition of the working fluid as the core heat dissipation mechanism. The working fluid changes from gaseous to liquid phase within the condenser, releasing latent heat of vaporization. This phase change process provides high heat transfer efficiency in a compact volume, allowing the condenser to maintain effective heat dissipation while being small enough for installation in finite rack spaces.
3Productivity
If the power density of the data center is increased to process more data, then the processing performance is improved, but the heat generation increases requiring larger cooling devices
Solution Approach 1:
The patent changes the operational parameters of the cooling system by using a two-phase closed thermosyphon cycle with phase change materials. This parameter change from single-phase to two-phase cooling enables more efficient heat transfer coefficients, allowing the system to handle higher heat loads from increased data center power density without proportionally increasing cooling device size or power consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design improves heat dissipation efficiency and reduces the size of the condenser, allowing for more effective heat transfer and reduced power consumption, while facilitating the installation in compact spaces.
Implementation Method 1
the heat generated by those heat sources can be rapidly absorbed by the working fluid
Implementation Method 2
the coolant and the working fluid can respectively flow in the accommodation space and the pipes along two opposite directions. Therefore, the temperature difference between the coolant and the working fluid can be ensured to increase the heat exchange efficiency
Implementation Method 3
a present immersion cooling system uses a condenser to condense the working fluid in the immersion cooling system
Data Source
AI summary
A condenser includes a casing and pipes. The casing includes an inlet chamber, an outlet chamber, a first inlet, a first outlet, an accommodation space, a second inlet, and a second outlet. The first inlet and the first outlet are respectively in fluid communication with the inlet chamber and the outlet chamber. The accommodation space accommodates a coolant, and the second inlet and the second outlet are in fluid communication with the accommodation space not in fluid communication with the inlet chamber and the outlet chamber. The pipes are in the accommodation space and connect the inlet chamber with the outlet chamber, and a working fluid flows from the inlet chamber to the outlet chamber via the pipes. The first inlet is located closer to the second outlet than the first outlet, and the first outlet is located closer to the second inlet than the first inlet.